Speaker
Dr
Sudhir Gupta
(Iowa State University)
Description
If neutrinos are Dirac type, in supersymmetry (SUSY), their masses can be explained by the introduction of an additional right chiral (neutrino) superfield which interacts with other superparticles through a tiny neutrino Yukawa coupling. We found that superpartner of such a right chiral neutrino (sneutrino) can be lightest among all the superparticles in a wide range of SUSY parameter space and hence can replace the lightest
neutralino dark matter candidate in those regions.
Collider signatures of such a SUSY scenario are especially interesting provided the next to lightest superparticle (NLSP) is charged and hence long lived because of smallness of neutrino Yukawa coupling.
We discuss LHC signatures of such a SUSY scenario of sneutrino dark matter with two specific charged NLSPs as
(a) lighter stau, and (b) lighter stop and show that they can be easily distinguished from the standard model background. We will also discuss gluino reconstruction in case of stop NLSP.
Author
Dr
Sudhir Gupta
(Iowa State University)
